“买新退旧”调包骗局、“高价挂卖”虚假交易……从平台“薅羊毛”，哪些行为是禁区？

Core Viewpoint - The rapid growth of e-commerce platforms has led to an increase in fraudulent activities, exposing vulnerabilities in information sharing, rule design, and technical defenses of these platforms [1][2]. Group 1: Fraudulent Activities - Criminals have exploited e-commerce platform loopholes through various scams, including "buy new, return old" schemes and "high-priced listings" for fake transactions [1][2]. - A specific case involved individuals purchasing luxury goods, marking them up, and then using the platform's return policy to profit from the price difference [1][2]. - The Shanghai People's Procuratorate reported that these fraudulent activities occurred over a hundred times, resulting in significant financial losses [1]. Group 2: Platform Vulnerabilities - The return review mechanism of the platforms is inadequate, allowing users to exploit the "worry-free return" policy for profit [2][3]. - Criminals have shown sophistication in their methods, including researching legal loopholes and collaborating to manipulate platform rules [2][3]. - The platforms rely heavily on automated systems for return processing, which lack strict scrutiny of product quality and model, leading to undetected fraudulent activities [3][4]. Group 3: Recommendations for Improvement - The procuratorial authorities have suggested implementing a dynamic monitoring system using big data and AI to identify suspicious high-priced listings and unusual return behaviors [4][5]. - Recommendations include optimizing return policies, setting limits on return frequencies, and enhancing credit rating systems for high-frequency return accounts [4][5]. - Establishing an information-sharing mechanism between platforms to track product flow and ensure the authenticity of transactions is also advised [5].